just testing
[youtube]HsHriRBTErA&ap=%2526fmt%3D18 [/youtube]
got it...
to embed the high quality version you need to add
&ap=%2526fmt%3D18
after the normal v= segment.
you should be able to notice the difference!!
Just checking if it works for another video...and it doesnt seem to.
[youtube]qurdlByDoAQ&ap=%2526fmt%3D18[/youtube]